| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 6.870 (b) | 7.472 (b) | 1.088 | − | 4.751 (b) | 5.797 (b) |
| 2 | (n,elastic) | 4.694 (b) | 5.300 (b) | 1.129 | − | 2.748 (b) | 4.182 (b) |
| 4 | (n,inelastic) | ( E-thr = 24.07 keV ) | 189.0 (mb) | 1.577 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.539 MeV ) | 1.806 (b) | 7.253 (mb) | |||
| 17 | (n,3n) | ( E-thr = 15.95 MeV ) | − | 766.2 (nb) | |||
| 22 | (n,na) | ( E-thr = 4.440 MeV ) | 4.011 (μb) | 2.610 (nb) | |||
| 28 | (n,np) | ( E-thr = 10.21 MeV ) | 4.042 (μb) | 15.77 (nb) | |||
| 32 | (n,nd) | ( E-thr = 14.38 MeV ) | − | 6.256e-12 (b) | |||
| 102 | (n,γ) | 2.176 (b) | 2.172 (b) | 0.998 | 5.577 (b) | 749.4 (μb) | 29.59 (mb) |
| 103 | (n,p) | ( E-thr = 1.595 MeV ) | 6.044 (mb) | 3.189 (μb) | |||
| 104 | (n,d) | ( E-thr = 7.969 MeV ) | 119.3 (μb) | 37.25 (nb) | |||
| 105 | (n,t) | ( E-thr = 8.070 MeV ) | 429.3 (nb) | 1.034 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 10.59 MeV ) | 4.203e-21 (b) | 707.9e-18 (b) | |||
| 107 | (n,a) | 85.36e-12 (b) | 85.97e-12 (b) | 1.007 | 8.452 (μb) | 586.0 (μb) | 581.6 (nb) |
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These cross sections are calculated from JENDL-4.0 at 300K.
The background color of each cell noted a cross section means the order of the cross-section value.
The unit of cross section, (b), means barns, and SI prefixes are used as following.
(kb) → 103(b), (mb) → 10−3(b),
(μb) → 10−6(b), (nb) → 10−9(b).
MT is a number that defines a reaction type. For the relation between MT and reaction type, please see here or refer to the manual of ENDF formats.
Maxwellian Average :
where T denotes the temperature, and kB the Boltzmann constant.
The upper and lower limits of integration, EL and EU
are set to 10−5 eV and 10 eV, respectively.
Resonance Integral :
with EL = 0.5 eV and EU = 10 MeV.
U-235 Thermal Fission-Neutron Spectrum Average (Fiss. Spec. Average) :
with EL = 10−5 eV and EU = 20 MeV.
The parameters a and b are 0.988 MeV and 2.249 MeV−1, respectively.
Westcott g-factor :
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